
Then, we estimated the intrinsic colours and magnitudes by using the following equations. Extinction coefficients in the equations are taken from [1]} and [2]}:
\((B-V)_0=(B-V)-E_d(B-V)\\\nonumber (U-B)_0=(U-B)-E_d(U-B)\\\nonumber V_0=V-3.1\times E_d(B-V)\\\nonumber (FUV)_0=FUV-4.37\times E_d(B-V)\\\nonumber (NUV)_0=NUV-7.06\times E_d(B-V)\\\nonumber \) 
